EP0457605A3 - Polarization converting device and polarized-light illuminating system using the device and image display unit using the device - Google Patents

Polarization converting device and polarized-light illuminating system using the device and image display unit using the device Download PDF

Info

Publication number: EP0457605A3
Authority: EP; European Patent Office
Prior art keywords: polarized; display unit; image display; light illuminating; illuminating system
Prior art date: 1990-05-18
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19910304453

Other versions

EP0457605A2 (en

EP0457605B1 (en

Inventor

Hideaki Mitsutake

Shigeru Kawasaki

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Canon Inc

Original Assignee

Canon Inc

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1990-05-18

Filing date

1991-05-17

Publication date

1992-05-06

1991-05-17 Application filed by Canon Inc filed Critical Canon Inc

1991-11-21 Publication of EP0457605A2 publication Critical patent/EP0457605A2/en

1992-05-06 Publication of EP0457605A3 publication Critical patent/EP0457605A3/en

1998-03-04 Application granted granted Critical

1998-03-04 Publication of EP0457605B1 publication Critical patent/EP0457605B1/en

2011-05-17 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133536—Reflective polarizers
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/13355—Polarising beam splitters [PBS]

EP91304453A 1990-05-18 1991-05-17 Polarization converting device and polarized-light illuminating system using the device and image display unit using the device Expired - Lifetime EP0457605B1 (en)

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date	Title
JP12675290		1990-05-18
JP126752/90		1990-05-18
JP26634690		1990-10-05
JP266346/90		1990-10-05
JP3136945A JPH04230705A (en)	1990-05-18	1991-05-14	Polarized light conversion device, polarized light illuminating device having this polarized light conversion device and projection type display device having polarized light illuminating device
JP136945/91		1991-05-14

Publications (3)

Publication Number	Publication Date
EP0457605A2 EP0457605A2 (en)	1991-11-21
EP0457605A3 true EP0457605A3 (en)	1992-05-06
EP0457605B1 EP0457605B1 (en)	1998-03-04

Family

ID=27315390

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91304453A Expired - Lifetime EP0457605B1 (en)	1990-05-18	1991-05-17	Polarization converting device and polarized-light illuminating system using the device and image display unit using the device

Country Status (5)

Country	Link
US (1)	US5387991A (en)
EP (1)	EP0457605B1 (en)
JP (1)	JPH04230705A (en)
CA (1)	CA2042829C (en)
DE (1)	DE69128979T2 (en)

Families Citing this family (50)

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DE69028497T2 (en) *	1989-12-20	1997-02-06	Canon Kk	Polarizing lighting device
US5570209A (en) *	1990-09-18	1996-10-29	Mitsubishi Denki Kabushiki Kaisha	Color projection type display apparatus having three liquid crystal displays of same structure
FR2685100A1 (en) *	1991-12-17	1993-06-18	Thomson Csf	OPTICAL POLARIZATION SEPARATOR AND APPLICATION TO A VISUALIZATION SYSTEM.
US5903388A (en) *	1992-06-11	1999-05-11	Sedlmayr Steven R	High efficiency electromagnetic beam projector and systems and method for implementation thereof
JPH0694902A (en) *	1992-09-11	1994-04-08	Canon Inc	Optical element, light source, liquid crystal optical element, polarizing illuminator, illuminating optical device, polarized light separating element, polarizer, picture projector and stereoscopic image display method
JP2698521B2 (en) *	1992-12-14	1998-01-19	キヤノン株式会社	Catadioptric optical system and projection exposure apparatus having the optical system
JPH07294850A (en) *	1994-04-22	1995-11-10	Canon Inc	Illuminator and projector using the same
JPH07294739A (en) *	1994-04-28	1995-11-10	Olympus Optical Co Ltd	Polarized light separating element
JP2725606B2 (en) *	1994-08-25	1998-03-11	日本電気株式会社	LCD projector device
JP2738324B2 (en) *	1995-01-23	1998-04-08	日本電気株式会社	Projection type liquid crystal display
KR0174852B1 (en) *	1995-04-18	1999-03-20	김주용	Advanced optical system using optical deflection prism for panel type lcd
US5608552A (en) *	1995-12-26	1997-03-04	Hughes Electronics	Liquid crystal display having an off-axis full-color holographic filter
US5959704A (en)	1996-02-08	1999-09-28	Fujitsu Limited	Display device having diffraction grating
TW401530B (en) *	1996-03-12	2000-08-11	Seiko Epson Corp	Polarized light separation device, method of fabricating the same and projection display apparatus using the polarized light separation device
TW358890B (en)	1996-06-25	1999-05-21	Seiko Epson Corp	Polarizing converter, polarizing lighting, display and projection using these elements
US5975703A (en) *	1996-09-30	1999-11-02	Digital Optics International	Image projection system
JPH10339011A (en) *	1997-06-06	1998-12-22	Enomoto Kinzoku Kk	Joint structure
FR2771186B1 (en)	1997-11-18	2001-11-02	Thomson Multimedia Sa	MIRROR DEVICE TO ROTATE THE POLARIZATION OF AN ELECTROMAGNETIC SIGNAL
US5900976A (en) *	1998-02-20	1999-05-04	Displaytech, Inc.	Display system including a polarizing beam splitter
JPH11271533A (en) *	1998-03-24	1999-10-08	Sharp Corp	Hologram polarizing and separating element
US5986815A (en) *	1998-05-15	1999-11-16	Optical Coating Laboratory, Inc.	Systems, methods and apparatus for improving the contrast ratio in reflective imaging systems utilizing color splitters
US6428198B1 (en) *	1998-07-07	2002-08-06	Alliedsignal Inc.	Display system having a light source separate from a display device
US6398364B1 (en)	1999-10-06	2002-06-04	Optical Coating Laboratory, Inc.	Off-axis image projection display system
KR100534575B1 (en) *	2001-04-24	2005-12-07	삼성에스디아이 주식회사	Light Converting Apparatus of Projection System
US20030112511A1 (en) *	2001-12-19	2003-06-19	Koninklijke Philips Electronics N.V.	Polarization conversion method for liquid crystal displays
TWI289708B (en) *	2002-12-25	2007-11-11	Qualcomm Mems Technologies Inc	Optical interference type color display
US7342705B2 (en)	2004-02-03	2008-03-11	Idc, Llc	Spatial light modulator with integrated optical compensation structure
US7630123B2 (en) *	2004-09-27	2009-12-08	Qualcomm Mems Technologies, Inc.	Method and device for compensating for color shift as a function of angle of view
US20060132383A1 (en) *	2004-09-27	2006-06-22	Idc, Llc	System and method for illuminating interferometric modulator display
US20060066586A1 (en) *	2004-09-27	2006-03-30	Gally Brian J	Touchscreens for displays
JP4752490B2 (en) *	2005-12-22	2011-08-17	ソニー株式会社	PS polarization separation conversion element and liquid crystal display assembly
EP1943551A2 (en)	2006-10-06	2008-07-16	Qualcomm Mems Technologies, Inc.	Light guide
EP2366943B1 (en) *	2006-10-06	2013-04-17	Qualcomm Mems Technologies, Inc.	Optical loss structure integrated in an illumination apparatus of a display
EP1946162A2 (en) *	2006-10-10	2008-07-23	Qualcomm Mems Technologies, Inc	Display device with diffractive optics
JP5239237B2 (en) *	2007-07-19	2013-07-17	コニカミノルタアドバンストレイヤー株式会社	Image projection device
US8068710B2 (en)	2007-12-07	2011-11-29	Qualcomm Mems Technologies, Inc.	Decoupled holographic film and diffuser
US7949213B2 (en) *	2007-12-07	2011-05-24	Qualcomm Mems Technologies, Inc.	Light illumination of displays with front light guide and coupling elements
US20090168459A1 (en) *	2007-12-27	2009-07-02	Qualcomm Incorporated	Light guide including conjugate film
US8348489B2 (en)	2008-01-30	2013-01-08	Qualcomm Mems Technologies, Inc.	Thin illumination system
US8721149B2 (en)	2008-01-30	2014-05-13	Qualcomm Mems Technologies, Inc.	Illumination device having a tapered light guide
CN101782688B (en) *	2009-01-19	2012-07-25	上海丽恒光微电子科技有限公司	Polarizer assembly and a reflective modulation-imager projection system
US9121979B2 (en) *	2009-05-29	2015-09-01	Qualcomm Mems Technologies, Inc.	Illumination devices and methods of fabrication thereof
JP5583558B2 (en) *	2010-11-18	2014-09-03	旭化成イーマテリアルズ株式会社	Polarization conversion illumination device and display device using the same
US8902484B2 (en)	2010-12-15	2014-12-02	Qualcomm Mems Technologies, Inc.	Holographic brightness enhancement film
JP5747538B2 (en) *	2011-02-04	2015-07-15	セイコーエプソン株式会社	Virtual image display device
JP2015127828A (en) *	2015-03-13	2015-07-09	セイコーエプソン株式会社	Virtual image display device
JP6577797B2 (en) *	2015-09-03	2019-09-18	日本電信電話株式会社	Polarization separator
JP6317050B1 (en) *	2016-06-17	2018-04-25	オリンパス株式会社	Objective optical system and endoscope apparatus including the same
CN106405933B (en) *	2016-10-31	2019-08-13	京东方科技集团股份有限公司	Backlight module and liquid crystal display device
US11698539B2 (en)	2019-09-13	2023-07-11	Meta Platforms Technologies, Llc	Short distance illumination of a spatial light modulator using a pancake lens assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE43569C (en) *			A. KrOss in Hamburg, Adolphsbrücke 7	Prism combination made of calcite for the purpose of mixing and comparing light bundles
EP0040033A1 (en) *	1980-05-09	1981-11-18	Fujitsu Limited	Prism polarizer
DE3829598A1 (en) *	1988-08-29	1990-03-01	Hertz Inst Heinrich	Projection device
US4913529A (en) *	1988-12-27	1990-04-03	North American Philips Corp.	Illumination system for an LCD display system
EP0434041A1 (en) *	1989-12-20	1991-06-26	Canon Kabushiki Kaisha	Polarized illuminazing device
EP0443586A2 (en) *	1990-02-22	1991-08-28	Canon Kabushiki Kaisha	Projector
FR2658925A1 (en) *	1990-02-23	1991-08-30	Sextant Avionique	Polarised-light illumination device and display equipment including at least one such device

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US4516837A (en) *	1983-02-22	1985-05-14	Sperry Corporation	Electro-optical switch for unpolarized optical signals
JPS6063503A (en) *	1983-09-19	1985-04-11	Fujitsu Ltd	Polarization separating element
US4989076A (en) *	1987-01-27	1991-01-29	Canon Kabushiki Kaisha	Video projection apparatus
US4824214A (en) *	1987-07-27	1989-04-25	Hughes Aircraft Company	Unitary prepolarizing prism assembly for a four color liquid crystal light valve image projector
US5042921A (en) *	1988-10-25	1991-08-27	Casio Computer Co., Ltd.	Liquid crystal display apparatus

1991
- 1991-05-14 JP JP3136945A patent/JPH04230705A/en active Pending
- 1991-05-17 CA CA002042829A patent/CA2042829C/en not_active Expired - Lifetime
- 1991-05-17 EP EP91304453A patent/EP0457605B1/en not_active Expired - Lifetime
- 1991-05-17 DE DE69128979T patent/DE69128979T2/en not_active Expired - Fee Related
1992
- 1992-12-09 US US07/988,018 patent/US5387991A/en not_active Expired - Lifetime

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE43569C (en) *			A. KrOss in Hamburg, Adolphsbrücke 7	Prism combination made of calcite for the purpose of mixing and comparing light bundles
EP0040033A1 (en) *	1980-05-09	1981-11-18	Fujitsu Limited	Prism polarizer
DE3829598A1 (en) *	1988-08-29	1990-03-01	Hertz Inst Heinrich	Projection device
US4913529A (en) *	1988-12-27	1990-04-03	North American Philips Corp.	Illumination system for an LCD display system
EP0434041A1 (en) *	1989-12-20	1991-06-26	Canon Kabushiki Kaisha	Polarized illuminazing device
EP0443586A2 (en) *	1990-02-22	1991-08-28	Canon Kabushiki Kaisha	Projector
FR2658925A1 (en) *	1990-02-23	1991-08-30	Sextant Avionique	Polarised-light illumination device and display equipment including at least one such device

Non-Patent Citations (1)

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Title
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 199 (P-380)[1922], 16th August 1985; & JP-A-60 63 503 (FUJITSU K.K.) 11-04-1985 *

Also Published As

Publication number	Publication date
EP0457605A2 (en)	1991-11-21
DE69128979D1 (en)	1998-04-09
DE69128979T2 (en)	1998-08-06
CA2042829C (en)	1997-12-02
CA2042829A1 (en)	1991-11-19
EP0457605B1 (en)	1998-03-04
US5387991A (en)	1995-02-07
JPH04230705A (en)	1992-08-19

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Date	Code	Title	Description
1991-10-04	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1992-11-19	17P	Request for examination filed	Effective date: 19920922
1994-09-07	17Q	First examination report despatched	Effective date: 19940725
1997-04-17	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1997-08-28	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
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1998-01-16	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1998-02-10	ITF	It: translation for a ep patent filed	Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.
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Publication	Publication Date	Title
EP0457605A3 (en)	1992-05-06	Polarization converting device and polarized-light illuminating system using the device and image display unit using the device
EP0447167A3 (en)	1992-07-22	Image display device
DE69421873T2 (en)	2000-06-15	Image acquisition and display system
KR970001735B1 (en)	1997-02-14	A liquid crystal display device and a liquid crystal display system using the liquid crystal display device
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